V-shaped ear ventilation tube

Details V-shaped ear ventilation tube V-shaped ear ventilation tube

1986-05-16

1989-02-28

Yasko, John D.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

A61M 5325

Patent

active

048081710

ABSTRACT:
An ear ventilation tube adapted for insertion in the tympanic membrane of the ear for communicating fluid between the middle and outer ear formed by two conical body portions joined at their narrow ends with an opening through the center of the conical flanges for the passage of fluid. The outer surface of the ventilation tube forms a V-shape with the restricted portion near the center of the ventilation tube. The inner surface of the ventilation tube along the opening has a middle restricted portion and two end portions of significantly larger size in order to enhance the flow of fluid through the opening.

REFERENCES:
patent: 3948271 (1976-04-01), Akiyama
patent: 4094303 (1978-06-01), Johnston

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